1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2014 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS5518M AEROSPACE MATERIAL SPECIFICATION AMS5518 REV. M Issued 1941-11 Revised 2
5、014-06 Superseding AMS5518L Steel, Corrosion Resistant, Sheet and Strip 18Cr - 8Ni Cold Rolled, 150 ksi (1034 MPa) Tensile Strength (Composition similar to UNS S30100) RATIONALE AMS5518M revises Scope (1.1.1), Properties (3.3.1.1), Reports (4.4), and is a Five Year Review and update of this specific
6、ation. 1. SCOPE 1.1 Form This specification covers a corrosion-resistant steel in the form of sheet and strip. 1.1.1 This specification covers products 0.005 inch (0.13 mm) and over in nominal thickness (See 8.6). 1.2 Application These products have been used typically for parts requiring strength a
7、nd moderate forming or bending, but usage is not limited to such applications. 1.2.1 Mechanical properties specified herein are obtained by cold working (strain hardening) and not by heat treatment. Therefore, the cold-worked product should not be heated to a temperature which adversely affects the
8、mechanical properties or corrosion resistance before, during, or after fabrication. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revisi
9、on of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warren
10、dale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS2242 Tolerances, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Sheet, Strip, and Plate SAE INTERNATIONAL AMS5518M Page 2 of 5 AMS2248 Chemical Check Analysis L
11、imits, Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron Alloys AMS2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging Stock AMS2807 Identification, Carbon and Low-Alloy Steels, Cor
12、rosion and Heat-Resistant Steels and Alloys, Sheet, Strip, Plate, and Aircraft Tubing 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM A 370 Mechanical Testing of Steel Products ASTM
13、 E 290 Bend Testing of Material for Ductility ASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys ASTM E 384 Knoop and Vickers Hardness of Materials 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight sho
14、wn in Table 1, determined by wet chemical methods in accordance with ASTM E 353, by spectrochemical methods, or by other analytical methods acceptable to purchaser. TABLE 1 - COMPOSITION Element min max Carbon - 0.15 Manganese - 2.00 Silicon - 1.00 Phosphorus - 0.040 Sulfur - 0.030 Chromium 16.00 18
15、.00 Nickel 6.00 8.00 Molybdenum - 0.75 Copper - 0.75 3.1.1 Check Analysis Composition variations shall meet the applicable requirements of AMS2248. 3.2 Condition Solution heat treated, descaled unless solution heat treatment is performed in an atmosphere yielding a bright finish, and cold rolled (Se
16、e 8.2). 3.3 Properties The product shall conform to the following requirements, determined in accordance with ASTM A 370: SAE INTERNATIONAL AMS5518M Page 3 of 5 3.3.1 Tensile Properties Product 0.005 inch (0.13 mm) and over in nominal thickness shall have the properties shown in Table 2. 3.3.1.1 Ten
17、sile property requirements for product outside of the range covered by 3.3.1 shall be agreed upon between purchaser and producer. TABLE 2 - MINIMUM TENSILE PROPERTIES Property Value Tensile Strength 150 ksi (1034 MPa) Yield Strength at 0.2% Offset 110 ksi ( 758 MPa) Elongation in 2 Inches (50.8 mm)
18、Nominal Thickness Up to 0.015 Inch (0.38 mm), incl Over 0.015 Inch (0.38 mm) 15% 18% 3.3.2 Hardness Shall be not lower than 32 HRC or 303 HB, or equivalent (See 8.3). Product shall not be rejected on the basis of hardness if tensile properties of 3.3.1 are acceptable, determined on specimens taken f
19、rom the same sample as that with nonconforming hardness or from another sample with similar nonconforming hardness. 3.3.2.1 Microhardness testing in accordance with ASTM E 384 may be used for thin gages where superficial hardness testing is impractical. 3.3.3 Bending Product shall be tested in accor
20、dance with ASTM E 290 using a sample prepared nominally 0.75 inch (19.0 mm) in width with its axis of bending parallel to the direction of rolling and shall withstand without cracking when bending at room temperature through the angle and bend factor shown in Table 3. In case of dispute, the results
21、 of tests using the guided bend test of ASTM E 290 shall govern. TABLE 3 - BENDING PARAMETERS Nominal Thickness Inch Nominal Thickness Millimeters Angle deg, min Bend Factor Up to 0.050, excl Up to 1.27, excl 180 2 0.050 and over 1.27 and over 90 2 3.4 Quality The product, as received by purchaser,
22、shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the product. 3.5 Tolerances Shall conform to all applicable requirements of AMS2242. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of the pr
23、oduct shall supply all samples for vendors tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements. SAE INTERNATIONAL AMS551
24、8M Page 4 of 5 4.2 Classification of Tests All technical requirements are acceptance tests and shall be performed on each heat or lot as applicable. 4.3 Sampling and Testing Shall be in accordance with AMS2371. 4.4 Reports The vendor of the product shall furnish with each shipment a report showing t
25、he vendors name and the country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations) and the results of tests for composition of each heat and for tensile, hardness, and bending properties of each lot, and stating that the product conforms to th
26、e other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS5518M, size, and quantity. 4.4.1 When the product size is outside the range covered by 3.3.1, the report shall contain a statement to that effect. 4.5 Resampling and Retesting Shall be in ac
27、cordance with AMS2371. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall be in accordance with AMS2807. 5.2 Packaging The product shall be prepared for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging, an
28、d transportation of the product to ensure carrier acceptance and safe delivery. 6. ACKNOWLEDGMENT A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product not conforming to this specification, or to modif
29、ications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 A change bar (|) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the
30、left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 This condition may sometimes be designated “TR” by the producing mill. 8.3 Har
31、dness conversion tables for metals are presented in ASTM E 140. 8.4 Terms used in AMS are clarified in ARP1917. SAE INTERNATIONAL AMS5518M Page 5 of 5 8.5 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsius
32、temperatures are shown as the approximate equivalents of the primary units and are presented only for information. 8.6 Purchase documents should specify not less than the following: AMS5518M Form and size of product desired Property and acceptance requirements from the cognizant engineering organiza
33、tion applicable to sizes outside the range listed in 1.1.1. Quantity of product desired. 8.7 Similar Specifications MIL-S-5059D, Type 301, Half-Hard, is listed for information only and shall not be construed as an acceptable alternate unless all requirements of this AMS are met. PREPARED BY AMS COMMITTEE “F”
